Are chess players athletes?

I don't necessarily consider chess a sport, but your premise relies on the assumption that all sports are played by athletes. This is a weak argument based on semantics as the definition of a sport isn't restricted in this way.
It wasn't necessary to start the same topic again.
Thinking about it another way, if you've heard people argue this for years, then it's very unlikely something as simple as an ad absurdum argument will put it to rest.
Heh, at least you're honest ;)
I also doubt people will say chess players are athletes. The only reason I can think of it as sport-like is because there's preperation and competition. I guess in my area I wasn't raised to associate the word sport so strongly with ball games (for example).

To designate chess as a sport, wouldn't it also follow that checkers is a sport?
How about tiddlywinks (http://en.wikipedia.org/wiki/Tiddlywinks)?
Or, mumblety-peg (http://en.wikipedia.org/wiki/Mumblety-peg)?

Haha, yeah, is checkers a sport then? How about tic-tac-toe? How about knitting?
I think the main idea is people arguing for chess as a sport want to have aspects like skill, preparation and competition recognized and find a word like game too casual. And without another word available that means something like "difficult and grueling competition without intense physical exertion" sport is used.
It's not like everyone doesn't already understand the major distinctions between chess and ball games, but some still don't realize there are major distinctions between games like chess and games like tiddlywinks, so the obfuscated argument rages without making these points directly (my two cents anyway).

http://dictionary.reference.com/browse/sport
This gives 5 possible definitions for "sport" and I can't see any reason why chess can't be covered by point 3.
I think you would have to be classed as an "athlete" to compete in any sport covered by points 1 or 2, but not neccesarily point 3. So whilst your typical chess player is hardly very athletic, I don't think this is an argument against chess being a sport.

http://en.wikipedia.org/wiki/List_of_international_sport_federations
Lists chess and darts... as well as "boot throwing"

I'll share some of my candied almonds. I made them with cinammon and paprika, and they're crunchy, sweet, and spicy.
Why are people often posting food in these threads, I'm getting hungry and I 've already had breakfast. I'm overweight as it is. I can't imagine why, I play a lot of chess.

I'll share some of my candied almonds. I made them with cinammon and paprika, and they're crunchy, sweet, and spicy.
Why are people often posting food in these threads, I'm getting hungry and I 've already had breakfast. I'm overweight as it is. I can't imagine why, I play a lot of chess.
I've been losing weight by drinking more wine, and pairing the wine with good food.

yep, chess is a sport that doesn't require physical skills.
Sport stands for leisure.
Sport is all forms of physical and non physical activities which provide competitive entertainment to participants.
Sports require a degree of skill.
Sports are usually governed by a set of rules.
Do I see chess as a sport?
No, sports involve physical strength, speed, or endurance. To me chess a sport for the brain.

Both of the following pictures contain Hungarians in Speedos. Can you tell which photo is of the Olympic Champion water polo team?
It's a trick question, both are.

This topic is akin to "Shouldn't chess be in the Olympics?"
http://en.wikipedia.org/wiki/Chess_Olympiad
It's all rather subjective, IMO. For example, why should curling be included but not chess? http://www.topendsports.com/events/winter/sports/curling.htm